Register wheel



Dec. 18, 1928.

C. H. H. RODANET REGISTER WHEEL Jwmswfw? aw/z P06161726;

Patented Dec. 18, 1928.

f (UNITED STATES PATENT -OFFICE..

CHARLES HIL'AIRE HENRI RODANET, F VERSAILLES, FRANCE, ASSIGNOB TO SOCIETE ANONYME, ETAIBLISSEMENTS ED. JAEGER, 0F PARIS, FRANCE, A COMPANYOF FRANCE.

REGISTER WHEEL.

' Application filed July 21, 1927, Serial No. 207,555, and in France July 30, 1926.

It is known that registering devices for meters exist, in which the drums carrying the digits are arranged on a common fixed axis and are actuated by the driving pinion owing to the frictional stresses exerted between their opposite faces. I

For obtaining such a registering device, use is generally made of cast drums on the cylindrical wall of which the digits are traced by any suitable means. These drums are provided, on their faces, on the one hand with a ratchet having ten teeth, on the other hand with a single tooth, so that the single tooth of one of the drumsand the ratchet having ten teeth of the immediately adjacent drum can be combined with a suitable locking system. The single tooth actuates the locking system, upon the carrying forward operation, so as to release the teeth of the adjacent drum and allow the latter to advance to the extent of one division under the frictional stress constantly tending to cause it to rotate.

The present invention relates to an improvement in the construction of registering devices for meters. This improvement consists in obtaining the drums by pressing. Each drum is constituted by the assemblage of two pressed discs in the shape of a bowl, with a projecting central ortion, for forming the corresponding friction disc; the outer ledge of each bowl being cut out so as to obtain the ratchet having ten teeth, or the single transfer tooth. In the groove of the pulleythus obtained is mounted and secured a metalband, forming a cylindrical rim for carrying the digits. The particular arrangement of the-ratchet and of the single tooth allows useof sim 1e. springs, made of a piano string, as the loc ing system of the drums.

- Fig. 4 is a partial cross section made ac-' cording to line 4-4 of Fig. 3.

Figs. 5, 6'and 7, are, on a reduced scale, views of a drum with its locking system, re-, spectively in-left-hand side view, elevation, and ri ht-hand side view.-

u E drum is formed by the juxtaposition In the accompanying drawing and by way.

by a ring, surrounded by two conical walls. '45 the ELPICGSI of Wl11Cl1,lI'6 arranged on either side of the said disc. The projecting central portion is'pressed at 6, so as to form a plane ring 7 acting as a friction surface for ensuring the rotation of the drum.

The plane ledge of the bowl is cut out for forming a ratchet 8 having ten teeth (Fig. 1) or for carrying a single tooth 9 (Fig. 2). Between the ledge of the bowl and the conical surface 4 is formed a circular shoulder 10. Each disc is provided with a central circular opening 11 and a notch 12 formed in the conical surface 4. In this notch 12 opens aslot 13 diametrically extending on the circular shoulder 10.

A disc cariyingratchet teeth (Fig. 1) and a disc carrying a single tooth (Fig. 2) are applied against each other, the annular plane bottoms 3 of the bowls corresponding to each other. They are then assembled in any suitable manner so as to constitute the flanges of a kind of pulley (Fig. 3) having a hollow;

rim, and a V-shaped cross section. It will be seen that, owing to this assemblage, the inclination of the teeth of the ratchet 8 is reverse to that of the single tooth 9.

-.Preferably, for effecting the assemblage of the discs, on the bottoms 3' of the bowls are formed by pressing, openings-14 and perforated bosses 15; the openings 14 of one of the discs corresponding, relatively to the position, to the perforated bosses-15 of the opposite disc and vice versa. The perforated bosses 15 are fitted in the corresponding openings 14 and the whole is riveted for ensuring the junction of the discs (Fig. 3). 0 The rim ofthe drum is constituted by a metal band 16 resting on the circular shoulders 10 and the folded ends of which are engaged into the slots 13. The notches 12, provided in the conical surfaces 4 of the discs permit foldingthe ends of the band 16in order to definitely fix it. On this band 16 are printedthe'digits.

The drums thus obtained aremounted, in the ordinary'manner, on the common axis adapted to carry them. The edgewise teeth are combined with a locking system solely formed by springs, made of a piano string bent in the shape of a hair pin. The transverse horizontal member 17 of this .pin en" gages both with the single tooth 9 of a drum and with the ratchet 8, having ten teeth, of

the following drum (Fig. 5); The branches to form hooks 22 at their ends, in order to be of the arrow ;ment 0 loc :u u g springs.

What I claim as my invention and desire to secure by Letters Patent is:

1. Register wheel comprising two pressed discs forming the side members, and a rim formed by a metal band the ends of which hook on the said side members characterized in that each disc is in the shape of a bowl p. hThe drums are aligned by secured in notches 23 provided in the edge of having a flat bottom and a projecting central the flange 20 of the said support. A counterplate 24 holds the whole in position. Each spring normally locks a drum by engagement with the corresponding ratchet 8 (Fig. 5). At the time of efiecting the carrying forward portion; the flat bottom of each disc fitting against the corresponding flat bottom of the other disc, while the plane face of central portion constitutes a driving friction surface, the ledges of the bowls respectively carrying operation, the single tooth 9 of the preceding ratchet teeth and a single tooth for carrying drum pushes back the spring (Fig. 7) and thus releases the ratchet 8 from the drum which is to be moved one unit. The latter is driven by friction in the direction of the operations.

2. Register wheel as claimed in claim further characterized in that the flat botto s p of thediscs are provided'with tubular rivet arrow :2: untilthe single tooth 9, allowing the these rivets passing through corresponding spring to escape, permits the latter to come in engagement with the teeth of the ratchet 8 for again locking the drum against any rotary movement.

For bringing back the drums to zero, it sufiices to cause them to rotate in thedirection openings of the opposite disc so as to permit the assemblage by riveting.

In testimony whereof I have signed my name to this specification.

CHARLES HILAIRE HENRI RODANET.

eir single tooth 9 with the 

